- Communications Faculty of Sciences University Ankara Series B Chemistry and Chemical Engineering
- Vol: 36
- SPECTROPHOTOMETRIC DETERMINATION OF THE ACID DISSO- CIATION CONSTANTS OF SOME 1,5 - DIPHENYLFORMAZAN...
SPECTROPHOTOMETRIC DETERMINATION OF THE ACID DISSO- CIATION CONSTANTS OF SOME 1,5 - DIPHENYLFORMAZAN DERI- VATIVES
Authors : N. T. Abdel Ghani
Pages : 8-14
Doi:10.1501/Commub_0000000475
View : 6 | Download : 4
Publication Date : 1990-01-01
Article Type : Research
Abstract :The acid dissociation constants of some 1 - (o - carboxyphenyl 3 ■ acetyl - 5 - aryl) for- mazans are determined in 40 % (v/ v) ethanolic buffer Solutions spectrophotometrically. The spectral changes with variation of pH were discussed in relation to the different ionic species existing in solution. The pKa values were discussed in terms of molecular structure and subs- tituent effect.Keywords : SPECTROPHOTOMETRIC DETERMINATION, CIATION CONSTANTS, DIPHENYLFORMAZAN DERI